Author Topic: Add Security Exception  (Read 2574 times)

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Offline Antioch

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Add Security Exception
« on: April 06, 2016, 03:01:34 PM »
Hi to all

I have been using Avast Free on an XP3 desktop and an XP3 laptop[ACER] for a number of years and have had no problems.
I use Thunderbird as my email client and my ISP is Virgin Media.

For a couple of weeks there have been a few problems with sending and receiving in Thunderbird, but four days ago the problem was resolved by VM.

Since Sunday 3 April I have been unable to send and 'Get messages' on the laptop where I have 3 email addresses.
I also have 3 email addresses on the desktop, which are working OK.

On the laptop on which I cannot send or receive, I keep getting the Add Security Exception window pop-up which indicates it is generated by Avast, with regard to 'this site attempts to identify itself with invalid information' - 'unknown identity' - the certificate is not trusted..........'  I would attach, if allowed, a screenshot but I cannot do this because I cannot send it from the laptop.

Both computers are running the same version of Avast 11.1.2253.

On another forum it was suggested that I disable Avast and try that.  I did this, very quickly for one email address and a dozen or more messages were downloaded to that email Inbox.

VM are adamant that this is not their problem.

I have checked through and compared all settings etc in the Avast programme on the desktop and laptop and can find nothing differing.

I have also searched within this forum but could not find any current issue - a couple a few years ago - regarding this subject.

I have tried no troubleshooting or suggestions - not many - via a general web search on Google.

I look forward to getting some help with this.

Rgds
Antioch

Offline Eddy

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Re: Add Security Exception
« Reply #1 on: April 06, 2016, 03:11:18 PM »
Make sure the certificate is imported correctly.
https://www.avast.com/faq.php?article=AVKB91

Offline Antioch

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Re: Add Security Exception
« Reply #2 on: April 06, 2016, 04:49:22 PM »
Hi Eddy
Thanks for your quick response and the link.
I followed the link through to Fig11 but did not get the next after 'OK'.
However, I went into my email client and was able to get all messages on all three addresses and was also able to send to all others.
I did note that the SLL box was already ticked previously?

As I could not progress from Fig11 to the next steps, does it matter?
Can I now delete the download MailShield folder?
In addition, in the past I have disabled the scanning for any virus in and out with email, in the antivirus I used to use.  I have always considered is not to be required.
Can this be done in Avast - I have never considered to do this so far? I believe this can be done in Main Settings?  I no longer use newsgroups.

Thank you.

Rgds
Antioch



Offline Eddy

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Re: Add Security Exception
« Reply #3 on: April 06, 2016, 05:00:07 PM »
Scanning of email (both incoming as outgoing) is needed nowadays.
incoming: You don't want to get infected mails
outgoing : You don't want to send infected mails to others

Disabling/removing the mail shield will stop the scanning when sending/receiving with a email client.
I don't know if it possible to disable disable scanning web-based mail as I do not know where this part of avast is located in the application.

As for your problem, if the certificate is imported in Thunderbird it should work without a problem.
Check Thunderbird if it has the certificate.
If not, perform a repair of avast and see if it solved the problem.
If the problem is not solved, perform a clean installation of avast.

Offline Antioch

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Re: Add Security Exception
« Reply #4 on: April 07, 2016, 06:01:57 PM »
Many thanks for your help.
My email client is working properly as of this moment and has been since I followed your guidance.

I note your comments regarding the scanning of in/out emails - perhaps Avast scan differently to other software.
Avast must be one of the few that consider this a need as I cannot say I have heard of any of the other major antivirus
providers changing their view on this subject.

I still cannot see why I had this problem on the laptop and not on the desktop?

Keep up the good work.

Rgds
Antioch

Offline Eddy

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Re: Add Security Exception
« Reply #5 on: April 07, 2016, 06:06:06 PM »
It is hard (if not impossible) to tell why it didn't worked and now does.
My guess is that the update of avast repaired something that made it work.

Offline Antioch

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Re: Add Security Exception
« Reply #6 on: April 07, 2016, 09:19:51 PM »
Yes - as so often is the case with applications/software.

Rgds
Antioch